Hi Doreen,
My symptoms are as reliable as the weather. When the rainy season hits (we really can't call it winter in Vancouver), my symptoms get worse. My doctor is so used to it that he expects to see me in at the same time each year.

We have been through all the traditional explorations (SAD, Depression etc.) and now just chalk it up to the way it is with me.
Any intervention turns out to be more of a hobby than a true treatment. My doctor has said that the only true prescription he could give me would be a ticket to Arizona. One of his other (well off) patients does that and finds it very effective.